Definitions Flashcards
Respect:
Informed consent
Participants are told the nature and purpose of the study (without revealing too much thus creating demand characteristics) so they have full knowledge and can consent to the study
Respect:
Right to withdraw
Participants must be aware that they don’t have to take part in the study and can withdraw at any time with no repercussions
Respect:
Confidentiality
A participants personal information will be kept secure and protected through out the study and will be destroyed after the study.
What three subsections are under the heading respect?
Informed consent, right to withdraw and confidentiality
`Competence
The experimenter must know what their limits are and not go past these, also the participant must know what their examiner is capable of with no lies.
Responsibility:
Protection of participants
Participants should not experience unnecessary harm or have a negative psychical or mental effects unless it has been agreed with in the informed consent
Responsibility:
Debreif
Participants should experience a post study interview where they are told the nature of the experiment, what information they didn’t already know and they have the opportunity to ask any questions
What two subsections are under the heading responsibility?
Protection of participants and debreif
Integrity:
Deception
When we don’t tell the participants the true aim of the excrement or lie to them about what is happening during the study
What does the experiment research method establish?
Casual relationships between variables.
Definition of variiables
Thin gs that can be changed or manipulated
Independent variable - IV
Variables we deliberately alter (cause)
Dependent variables - DV
Variables we measure (effect)
Extraneous variables
Any variable other than the IV that could potentially affect the DV and confound the results. We control the effect of those to establish cause and effect relationships
Participant variables
Factors within a person that can vary over time or with a situation - boredom. Also factors that differ between people - age, sex, race
Situation variables
Factors that can vary in an environment - noise, temperature
Alternative/experimental hypothesis - HI
There will be a significant different, the IV will have an effect on the DV
Give an example of an alternative/experimental hypothesis
There will be A significant difference in the throwing accuracy between participants that throw a ball at a target with a silent audience and participants that throw a ball at a target with a noisy audience
Null hypothesis - H0
There will be NO significant difference - The IV wont have an effect on the DV
Give an example of a null hypothesis
There will be NO significant difference in the throwing accuracy between participants that throw a ball at a target with a silent audience and participants that throw a ball at a target with a noisy audience
Falsification hypothesis
A operationalised hypothesis that can be proven false
One tailed hypothesis
A hypothesis that predicts a direction for the difference
Give an example of a one tailed hypothesis
Girls will remember more words than boys - there’s a direction for the difference and we know which way
Two tailed hypothesis
A hypothesis that doest predict the direction of the difference
Give an example of a two tailed hypothesis
There will be a difference between the number of words that girls and the number of words boys will remember
Repeated measures design
The same participants are used in each condition, so each participant is their own control
Give an advantage of repeated measures design
Fewer people are needed for the experiment as the participants used in one experiment are also used in the other
Give a disadvantage of repeated measures design
Participants can experience order effects - tiredness, boredom ect as they’re used in both expierements
Independent measures design
Different participants are assigned to each condition, so participants only experience one condition
Give one an advantage to independent measures design
Participants are less likely to experience order effects as they only experience one condition
Give one disadvantage to independent measures design
More participants are needed as different participants are used in each condition
Matched pairs design
Participants are paired with another participant in the other condition with similar important participant variables in the study
Give an advantage of matched pairs design
Participants are less likely to experience order effects as they’re only used in one condition
Give a disadvantage of matched pairs design
It’s time consuming as you have match participants with similar important characteristics which can be a hard process
Participant variables
The differing characteristics between participants, age, background ect
Order effects
Effects caused by repeating something, tiredness, boredom ect
Give an example of a participant variable
Age
Give an example of an order effect
Tiredness
Counterbalanceing
Varying the order that participants experience conditions, used to balance out order effects.
Demand characteristics
Clues about the experiment or situation that help participants guess the aim/how their supposed to act so they act in this way
Target population
The group of people the research is interested in describing. We draw out sample from this group and aim to generalise our findings to this group
Sampling
The selected participants, taken from the target population, that we use in our reasearch
Sampling method
The technique used to choose our sample from the target population
Generalisability
The extent to which our results can be applied to our target population
Random sampling
All participants in the target population have an equal chance of being picked
Give an advantage of random sampling
It’s the most likely method to gain a representative sample
Give a disadvantage of random sampling
It’s time consuming to get all the target audience’s names
Opportunity sampling
Participants that are most easily available at the time
Give an advantage of opportunity sampling
The easiest method as it is time efficient and cost effective to locate the participants as it’s who is available at that time
Give a disadvantage of opportunity sampling
Likely to produce biased/un-representative sample, Participants will probably have similar characteristics so we will be unable to generalise our results to the target population
Representativeness
The extent to which our sample reflects the characteristics of our target population
Self-selected sampling
Participants have selected themselves
Give an advantage to self-selected sampling
It reduces participant attrition as the participants have chosen to take part
Participant attrition
Participant drop out rate
Give a disadvantage of self selected sampling
Participants are likely to have similar characteristics as they’ve seen the add in the same place and chosen to take part meaning they have similar participant characteristics. This means the sample is more biased and not a representative sample
Snowball sampling
Initial participants are used to generate other participants (word of mouth)
Give an advantage of snowball sampling
Can help researchers identify participants that are difficult to locate - gamblers and drug addicts
Give a disadvantage of snowball sampling`
The sample is more likely to be biased, making it difficult to generalise our results to the target population
Ecological validity - EV
The extent to which we can generalise our results to everyday/real life settings or situations
Laboratory experiments
The IV is manipulated in a controlled environment
Give an advantage of laboratory experiments
High control over extraneous variables making it easier to establish cause and effect relationships
Give a disadvantage or laboratory expierements
The environment may be artificial meaning the experiment has low ecological validity
Field experiments
The IV is manipulated in a natural/everyday setting
Give one advantage of field expierements
The environment is natural and less artificial meaning it has high ecological validity
Give one disadvantage of field experiments
Participants aren’t usually aware that we’re studying them so we break ethical guidlines
Quasi expierements
Experimenter doesn’t manipulate the IV and it is often naturally occurring
Give an advantage of quasi expieremnts
Allows us to research an IV that we can’t ethically manipulate
Give a disadvantage of quasi expierements
We cant limit the amount of control over the extraneous variables
Control standardisation
Cause and effect relationships are established when extraneous variables are controlled, this adds validity to our method and findings. Also controls the experience of every participant meaning its easier to replicate
Cause and effect relationships
If we’ve collected data empirically, we can show that to any significant level. One variable caused and effect on another. The more this effect is replicated the more confident we can be in the reliability of this finding
Inductive reasoning
Makes broad generalisations from specific observations, make observations, look for a pattern, make a generalisation and infer an explanation/theory. We work from specifics to general theories meaning there is more room for errors.
Deductive reasoning
A form of valid reasoning. You start with a general statement/theory, examine all the consequences of the theory/statement then research all logic as its the truth. General to the specific
Give an example of inductive reasoning
Carol is a teacher, Carol is a Geordie, all teachers are Georide
Give an example of deductive reasoning
All woman will die, Carol is a woman, Carol will die
Falsification
An important characteristic of science is that we produce theories and hypotheses that can be proven false. A theory that can’t be proven proven false can’t advance our understanding of the world or be judged as a better/worse explanation than another theory
Objectivity
Being uninfluenced by personal opinion, past experiences or bias.
Fact
Statements that we know to be true through direct observation
Observation
Can be made directly or through using tools - temperature, thermometer
Hypothesis
Precise testable predictions that can be falsified (proven false)
Theories
Explanation based on evidence and collected using scientific methods
Empirical evidence`
Data collected through direct observation or experimentation without evidence
Quantitative measures
Quantitative data is observable and objective, it should not rely on opinions, beliefs or unobservable data therefore its objective, empirical and has greater validity
Describe the steps in the hypothetico-deductive model
Ask a question - Do background research - Construct a hypothesis - Test with an experiment - Procedure working? (no - trouble shoot, check all steps and set up then return to test with an experiment) yes - Analyse data and draw conclusions - (reject null hypothesis - communicate results) or (reject alternative hypothesis then communicate results or create a new hypothesis and try again)
Observation method
Systematically watching and taking direct records or participants verbal and physical behaviour
Give an advantage of observation methods
We are able to see what participants do rather than what they say they do
Give a disadvantage of observation methods
We don’t know why they are doing what they are - We need a self report to know this. We may see what we expect to see, not what is actually there.
Covert observations
Observing a participants without their knowledge
Give an advantage of covert observations
Participants are more likely to behave naturally as they don’t know their being watched
Give a disadvantage of covert observations
Observing participants without their knowledge breaks societies codes of ethics and conduct - consent, deception, right to withdraw and privacy (unless it’s in a public place)
Overt observations
A participants is aware that we are observing their behaviour
Give an advantage of overt observations
It’s ethical as it avoids breaking any ethical guidlines
Give a disadvantage of overt observations
It’s likely to introduce demand characteristics causing participants to alter their behaviour
Participant observations
Observer participates in the behaviour being observed
Give an advantage of participant observations
Likely to produce unique insights into rare behaviour as we are insifers
Give a disadvantage to participant observations
We can become objective as an observer because we have ‘made friends’ with the participants
Non-participant observations
The observer is not a participant in the behaviour being observed
Give an advantage of non-participant observation
We remain objective as we aren’t taking part in the behaviour